WESTAMERICA BANCORPORATION

Ticker: WABC CUSIP: 957090103 Class: Common Stock

SEI INVESTMENTS CO's Holding History (CIK: 0000350894)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 26,265 Value ($000) $1,256 Avg Close $47.37 Range $44.09 - $50.85

Q3 2025

Shares 21,965 Value ($000) $1,098 Avg Close $48.41 Range $45.39 - $50.63

Q2 2025

Shares 16,684 Value ($000) $808 Avg Close $46.41 Range $40.44 - $50.21

Q1 2025

Shares 116,486 Value ($000) $5,898 Avg Close $48.88 Range $46.41 - $51.42

Q4 2024

Shares 118,199 Value ($000) $6,201 Avg Close $50.92 Range $44.42 - $57.25

Q3 2024

Shares 124,742 Value ($000) $6,165 Avg Close $47.96 Range $44.53 - $54.88

Q2 2024

Shares 134,324 Value ($000) $6,519 Avg Close $44.71 Range $41.94 - $47.91

Q1 2024

Shares 121,436 Value ($000) $5,936 Avg Close $44.93 Range $40.74 - $52.58

Q4 2023

Shares 99,812 Value ($000) $5,630 Avg Close $45.49 Range $38.59 - $53.38

Q3 2023

Shares 94,618 Value ($000) $4,092 Avg Close $40.65 Range $34.46 - $45.59

Q2 2023

Shares 82,824 Value ($000) $3,172 Avg Close $36.02 Range $31.77 - $39.59

Q1 2023

Shares 77,581 Value ($000) $3,437 Avg Close $47.96 Range $39.01 - $52.93

Q4 2022

Shares 76,527 Value ($000) $4,516 Avg Close $52.03 Range $45.87 - $56.69

Q3 2022

Shares 92,393 Value ($000) $4,831 Avg Close $50.12 Range $46.08 - $54.37

Q2 2022

Shares 91,258 Value ($000) $5,062 Avg Close $51.14 Range $48.47 - $53.70

Q1 2022

Shares 91,104 Value ($000) $5,493 Avg Close $51.69 Range $48.38 - $55.12

Q4 2021

Shares 87,577 Value ($000) $5,037 Avg Close $48.46 Range $45.96 - $50.44

Q3 2021

Shares 82,074 Value ($000) $4,601 Avg Close $48.00 Range $45.58 - $50.22

Q2 2021

Shares 77,215 Value ($000) $4,463 Avg Close $52.96 Range $48.87 - $55.24

Q1 2021

Shares 63,776 Value ($000) $3,972 Avg Close $51.31 Range $45.76 - $56.46

Q4 2020

Shares 65,009 Value ($000) $3,571 Avg Close $46.10 Range $42.70 - $50.73

Q3 2020

Shares 65,271 Value ($000) $3,547 Avg Close $48.57 Range $43.00 - $54.06

Q2 2020

Shares 52,021 Value ($000) $2,987 Avg Close $48.00 Range $42.78 - $54.53

Q1 2020

Shares 34,400 Value ($000) $2,022 Avg Close $50.93 Range $38.54 - $56.36

Q4 2019

Shares 36,720 Value ($000) $2,489 Avg Close $53.22 Range $48.47 - $56.23

Q3 2019

Shares 37,999 Value ($000) $2,363 Avg Close $50.16 Range $47.48 - $52.86

Q2 2019

Shares 37,057 Value ($000) $2,283 Avg Close $49.98 Range $47.55 - $52.33

Q1 2019

Shares 44,513 Value ($000) $2,751 Avg Close $49.51 Range $43.81 - $52.00

Q4 2018

Shares 56,150 Value ($000) $3,378 Avg Close $46.68 Range $41.39 - $50.57

Q3 2018

Shares 56,150 Value ($000) $3,378 Avg Close $48.42 Range $42.38 - $51.15

Q2 2018

Shares 39,593 Value ($000) $2,237 Avg Close $45.23 Range $42.53 - $47.73

Q1 2018

Shares 39,450 Value ($000) $2,291 Avg Close $46.10 Range $42.86 - $48.73

Q4 2017

Shares 36,020 Value ($000) $2,145 Avg Close $45.39 Range $41.22 - $49.73

Q3 2017

Shares 30,067 Value ($000) $1,790 Avg Close $41.22 Range $37.95 - $46.20

Q2 2017

Shares 58,198 Value ($000) $3,261 Avg Close $41.48 Range $38.41 - $44.70

Q1 2017

Shares 55,267 Value ($000) $3,085 Avg Close $43.50 Range $40.27 - $48.84

Q4 2016

Shares 80,329 Value ($000) $5,055 Avg Close $42.49 Range $35.31 - $49.16

Q3 2016

Shares 77,986 Value ($000) $3,968 Avg Close $36.26 Range $34.29 - $38.21

Q2 2016

Shares 74,081 Value ($000) $3,649 Avg Close $35.72 Range $33.77 - $38.30

Q1 2016

Shares 79,018 Value ($000) $3,849 Avg Close $33.33 Range $29.47 - $37.02

Q4 2015

Shares 78,654 Value ($000) $3,677 Avg Close $33.66 Range $30.28 - $36.28

Q3 2015

Shares 7,315 Value ($000) $325 Avg Close $34.11 Range $30.99 - $37.49

Q2 2015

Shares 7,959 Value ($000) $403 Avg Close $32.83 Range $29.86 - $37.32

Q1 2015

Shares 6,415 Value ($000) $277 Avg Close $30.86 Range $28.78 - $34.76

Q4 2014

Shares 5,900 Value ($000) $289 Avg Close $33.70 Range $29.79 - $36.02

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	26,265	$1,256	$47.37	$44.09 - $50.85
Q3 2025	21,965	$1,098	$48.41	$45.39 - $50.63
Q2 2025	16,684	$808	$46.41	$40.44 - $50.21
Q1 2025	116,486	$5,898	$48.88	$46.41 - $51.42
Q4 2024	118,199	$6,201	$50.92	$44.42 - $57.25
Q3 2024	124,742	$6,165	$47.96	$44.53 - $54.88
Q2 2024	134,324	$6,519	$44.71	$41.94 - $47.91
Q1 2024	121,436	$5,936	$44.93	$40.74 - $52.58
Q4 2023	99,812	$5,630	$45.49	$38.59 - $53.38
Q3 2023	94,618	$4,092	$40.65	$34.46 - $45.59
Q2 2023	82,824	$3,172	$36.02	$31.77 - $39.59
Q1 2023	77,581	$3,437	$47.96	$39.01 - $52.93
Q4 2022	76,527	$4,516	$52.03	$45.87 - $56.69
Q3 2022	92,393	$4,831	$50.12	$46.08 - $54.37
Q2 2022	91,258	$5,062	$51.14	$48.47 - $53.70
Q1 2022	91,104	$5,493	$51.69	$48.38 - $55.12
Q4 2021	87,577	$5,037	$48.46	$45.96 - $50.44
Q3 2021	82,074	$4,601	$48.00	$45.58 - $50.22
Q2 2021	77,215	$4,463	$52.96	$48.87 - $55.24
Q1 2021	63,776	$3,972	$51.31	$45.76 - $56.46
Q4 2020	65,009	$3,571	$46.10	$42.70 - $50.73
Q3 2020	65,271	$3,547	$48.57	$43.00 - $54.06
Q2 2020	52,021	$2,987	$48.00	$42.78 - $54.53
Q1 2020	34,400	$2,022	$50.93	$38.54 - $56.36
Q4 2019	36,720	$2,489	$53.22	$48.47 - $56.23
Q3 2019	37,999	$2,363	$50.16	$47.48 - $52.86
Q2 2019	37,057	$2,283	$49.98	$47.55 - $52.33
Q1 2019	44,513	$2,751	$49.51	$43.81 - $52.00
Q4 2018	56,150	$3,378	$46.68	$41.39 - $50.57
Q3 2018	56,150	$3,378	$48.42	$42.38 - $51.15
Q2 2018	39,593	$2,237	$45.23	$42.53 - $47.73
Q1 2018	39,450	$2,291	$46.10	$42.86 - $48.73
Q4 2017	36,020	$2,145	$45.39	$41.22 - $49.73
Q3 2017	30,067	$1,790	$41.22	$37.95 - $46.20
Q2 2017	58,198	$3,261	$41.48	$38.41 - $44.70
Q1 2017	55,267	$3,085	$43.50	$40.27 - $48.84
Q4 2016	80,329	$5,055	$42.49	$35.31 - $49.16
Q3 2016	77,986	$3,968	$36.26	$34.29 - $38.21
Q2 2016	74,081	$3,649	$35.72	$33.77 - $38.30
Q1 2016	79,018	$3,849	$33.33	$29.47 - $37.02
Q4 2015	78,654	$3,677	$33.66	$30.28 - $36.28
Q3 2015	7,315	$325	$34.11	$30.99 - $37.49
Q2 2015	7,959	$403	$32.83	$29.86 - $37.32
Q1 2015	6,415	$277	$30.86	$28.78 - $34.76
Q4 2014	5,900	$289	$33.70	$29.79 - $36.02